Is Warner Bros. Aiming for a Dark and Mature Justice League Movie?

Thanks to the unqualified success of Marvel’s “The Avengers”, there’s really no reason for Warner Bros. not to get cracking on their own version of the Avengers — the Justice League. With yesterday’s news that the WB is, indeed, moving forward on a “Justice League” movie, rumors are starting to leak about what we can expect from this live-action take on D.C.’s superhero team-up.

According to the prolific Mark Millar, who has his own fingers in plenty of comic book properties percolating around Hollywood and elsewhere, he expects this version of the Justice League to be “dark and mature”. How does he know? Well, he knows someone who knows the writer Will Beall, who WB has tapped to write “Justice League”. He writes via Millar World (h/t Mike):

A pal of mine is good friends with the new Justice League screenwriter and said his take on the team is incredible. Very real-world and not at all what you might expect. WB has a chequered history with their superhero characters. They’re great with their boy wizards, but less consistent with their DC stable. But my chum said that this could be a thing of beauty and has been in the works for a little while now, not just an avengers knock-off. Best of luck to them. The tidbits I heard sound quite dark and mature, which isn’t what I expected. But word on Gangster Squad is great too so I feel this is in really good hands.

“Real-world”? “Dark and mature”? I guess you could use all those descriptions for Batman (especially the Christopher Nolan Batman movies), but for the rest of the Justice League roster as well, including Superman, Green Lantern, and Wonder Woman?